| US 7,448,135 B2 | ||
| Multi-blade razors | ||
| Andrew Zhuk, Acton, Mass. (US); Weili Yu, Medfield, Mass. (US); Hoang Mai Trankiem, Boston, Mass. (US); Neville Sonnenberg, Newton, Mass. (US); Kevin L. Powell, Hants (United Kingdom); Yiqian Eric Liu, Lexington, Mass. (US); Robert L. Lescanec, Boston, Mass. (US); Steve S. Hahn, Wellesley, Mass. (US); Joseph A. DePuydt, Quincy, Mass. (US); Alan Crook, Tadley Hants (United Kingdom); and Cinzia Simonis Cloke, Arlington, Mass. (US) | ||
| Assigned to The Gillette Company, Boston, Mass. (US) | ||
| Filed on Mar. 29, 2006, as Appl. No. 11/392,148. | ||
| Prior Publication US 2007/0227010 A1, Oct. 04, 2007 | ||
| Int. Cl. B26B 21/22 (2006.01) | ||
| U.S. Cl. 30—50 [30/77] | 7 Claims |
| 1. A razor comprising:
a safety razor blade unit comprising a guard, a cap, and first, second and third blades with parallel sharpened edges located
between the guard and cap with the first blade closest to the guard, the third blade furthest from the guard, and the second
blade disposed between the first and third blades, the blades having first, second and third tip radii, respectively, at least
two of the three blades having different tip radii, and wherein the first blade has a higher coefficient of friction than
the second blade and wherein there is a progressive exposure difference from the first to third blade.
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